Improvement in brick-molds and brick-press boxes



UNITED STATES PATENT OFFICE.

THOMAS CLIFFORD, SR, AND JAMES CLIFFORD, OF MOUNT SAYAGE, MD.

IMPROVEMENT IN BRlCK-MOLDS AND BRICK-PRESS BOXES.

Specification forming part of Letters Patent No. 218,711, dated August 19, 1879 application filed May 9, 1879.

To all whom it may concern:

Be it known, that we, THOMAS CLIFFORD, S12, and J AMES CLIFFORD, of Mount Savage, in the county of Allegheny and State of Maryland, have invented certain new and useful Improvements in Linings for Brick-Molds and Brick-Press Boxes; and we do hereby declare one set of plates lasttwice as long as when fastened by means of rivets, which makes turning impossible.

In the annexed drawings, making a part of this specification, Figure l is a horizontal section of the mold or press-box. Fig.2 is a longitudinal vertical section of the same. Fig. 3 is a bottom View of the same. I

In all the figures the same letters are employed in the indication of identical parts.

A A-are the plates, placed on the inside of the mold or box B, and secured to its inner sides by the flat-headed screw-bolts O and nuts 0. The bolts 0 0 pass through the center of the plates, so that when required they may be turned, the holes in plates to receive the bolts always coming directly opposite the holes in the sides of the box.

On the bottom of the mold-box are fastened lugs D, which extend over the inner edges ot the box near the four corners, and support the lining-plates when the mold or box is in use. These lugs are also used to fasten the pressbox to the machine.

We are aware that it is customary to line the molds or press-boxes with sheets of metal; but these linings are usually fastened to the box by means of rivets, which prevent their being turned, so that when they become worn they are thrown away, and are of no further THOMAS CLIFFORD, SR. JAMES CLIFFORD.

Witnesses JOHN LAVELLE, THOMAS CLIFFORD, Jr. 

